ModernUO/Projects/UOContent/Mobiles/Monsters/SE/Kappa.cs

using System;
using System.Collections.Generic;
using Server.Engines.Plants;
using Server.Items;

namespace Server.Mobiles
{
    public class Kappa : BaseCreature
    {
        private static readonly Dictionary<Mobile, InternalTimer> m_Table = new Dictionary<Mobile, InternalTimer>();

        [Constructible]
        public Kappa() : base(AIType.AI_Melee, FightMode.Closest, 10, 1, 0.2, 0.4)
        {
            Body = 240;

            SetStr(186, 230);
            SetDex(51, 75);
            SetInt(41, 55);

            SetMana(30);

            SetHits(151, 180);

            SetDamage(6, 12);

            SetDamageType(ResistanceType.Physical, 100);

            SetResistance(ResistanceType.Physical, 35, 50);
            SetResistance(ResistanceType.Fire, 35, 50);
            SetResistance(ResistanceType.Cold, 25, 50);
            SetResistance(ResistanceType.Poison, 35, 50);
            SetResistance(ResistanceType.Energy, 20, 30);

            SetSkill(SkillName.MagicResist, 60.1, 70.0);
            SetSkill(SkillName.Tactics, 79.1, 89.0);
            SetSkill(SkillName.Wrestling, 60.1, 70.0);

            Fame = 1700;
            Karma = -1700;

            PackItem(new RawFishSteak(3));
            for (var i = 0; i < 2; i++)
                switch (Utility.Random(6))
                {
                    case 0:
                        PackItem(new Gears());
                        break;
                    case 1:
                        PackItem(new Hinge());
                        break;
                    case 2:
                        PackItem(new Axle());
                        break;
                }

            if (Core.ML && Utility.RandomDouble() < .33)
                PackItem(Seed.RandomPeculiarSeed(4));
        }

        public Kappa(Serial serial) : base(serial)
        {
        }

        public override string CorpseName => "a kappa corpse";
        public override string DefaultName => "a kappa";

        public override void GenerateLoot()
        {
            AddLoot(LootPack.Meager);
            AddLoot(LootPack.Average);
        }

        public override int GetAngerSound() => 0x50B;

        public override int GetIdleSound() => 0x50A;

        public override int GetAttackSound() => 0x509;

        public override int GetHurtSound() => 0x50C;

        public override int GetDeathSound() => 0x508;

        public override void OnGaveMeleeAttack(Mobile defender)
        {
            base.OnGaveMeleeAttack(defender);

            if (Utility.RandomBool())
                if (!IsBeingDrained(defender) && Mana > 14)
                {
                    defender.SendLocalizedMessage(1070848); // You feel your life force being stolen away.
                    BeginLifeDrain(defender, this);
                    Mana -= 15;
                }
        }

        public static bool IsBeingDrained(Mobile m) => m_Table.ContainsKey(m);

        public static void BeginLifeDrain(Mobile m, Mobile from)
        {
            m_Table.TryGetValue(m, out var timer);
            timer?.Stop();
            m_Table[m] = timer = new InternalTimer(from, m);

            timer.Start();
        }

        public static void DrainLife(Mobile m, Mobile from)
        {
            if (m.Alive)
            {
                var damageGiven = AOS.Damage(m, from, 5, 0, 0, 0, 0, 100);
                from.Hits += damageGiven;
            }
            else
            {
                EndLifeDrain(m);
            }
        }

        public static void EndLifeDrain(Mobile m)
        {
            if (m_Table.Remove(m, out var timer))
            {
                timer?.Stop();
                m.SendLocalizedMessage(1070849); // The drain on your life force is gone.
            }
        }

        public override void OnDamage(int amount, Mobile from, bool willKill)
        {
            if (from?.Map != null)
            {
                var amt = 0;
                Mobile target = this;
                var rand = Utility.Random(1, 100);
                if (willKill) amt = ((rand % 5) >> 2) + 3;
                if (Hits < 100 && rand < 21)
                {
                    target = rand % 2 < 1 ? this : from;
                    amt++;
                }

                if (amt > 0)
                {
                    SpillAcid(target, amt);
                    from.SendLocalizedMessage(1070820);
                    if (Mana > 14)
                        Mana -= 15;
                }
            }

            base.OnDamage(amount, from, willKill);
        }

        public override Item NewHarmfulItem() => new AcidSlime(TimeSpan.FromSeconds(10), 5, 10);

        public override void Serialize(IGenericWriter writer)
        {
            base.Serialize(writer);
            writer.Write(0);
        }

        public override void Deserialize(IGenericReader reader)
        {
            base.Deserialize(reader);
            var version = reader.ReadInt();
        }

        private class InternalTimer : Timer
        {
            private readonly Mobile m_From;
            private readonly Mobile m_Mobile;
            private int m_Count;

            public InternalTimer(Mobile from, Mobile m) : base(TimeSpan.FromSeconds(1.0), TimeSpan.FromSeconds(1.0))
            {
                m_From = from;
                m_Mobile = m;
                Priority = TimerPriority.TwoFiftyMS;
            }

            protected override void OnTick()
            {
                DrainLife(m_Mobile, m_From);

                if (Running && ++m_Count == 5)
                    EndLifeDrain(m_Mobile);
            }
        }
    }
}